[Scipy-tickets] [SciPy] #1458: lu_factor gives different results, depending on whether the input is C or Fortran contiguous (also affects lu_solve)

SciPy Trac scipy-tickets@scipy....
Thu Jun 9 13:30:30 CDT 2011


#1458: lu_factor gives different results, depending on whether the input is C or
Fortran contiguous (also affects lu_solve)
--------------------------+-------------------------------------------------
 Reporter:  mike.wimmer   |       Owner:  somebody
     Type:  defect        |      Status:  new     
 Priority:  normal        |   Milestone:          
Component:  scipy.linalg  |     Version:  0.9.0   
 Keywords:                |  
--------------------------+-------------------------------------------------

Comment(by nils):

 {{{
  python -i ticket_1458.py
 (array([[ 2. ,  0.5],
        [ 0. ,  1. ]]), array([0, 1], dtype='int32'))
 (array([[ 2.,  1.],
        [ 0.,  1.]]), array([0, 1], dtype='int32'))
 2.0.0.dev-a1e7be3
 0.10.0.dev7179
 atlas_threads_info:
     libraries = ['lapack', 'ptf77blas', 'ptcblas', 'atlas']
     library_dirs = ['/home/nwagner/src/ATLAS3.8.2/mybuild/lib']
     define_macros = [('ATLAS_INFO', '"\\"3.8.2\\""')]
     language = f77
     include_dirs = ['/home/nwagner/src/ATLAS3.8.2/include']
 blas_opt_info:
     libraries = ['ptf77blas', 'ptcblas', 'atlas']
     library_dirs = ['/home/nwagner/src/ATLAS3.8.2/mybuild/lib']
     define_macros = [('ATLAS_INFO', '"\\"3.8.2\\""')]
     language = c
     include_dirs = ['/home/nwagner/src/ATLAS3.8.2/include']
 atlas_blas_threads_info:
     libraries = ['ptf77blas', 'ptcblas', 'atlas']
     library_dirs = ['/home/nwagner/src/ATLAS3.8.2/mybuild/lib']
     define_macros = [('ATLAS_INFO', '"\\"3.8.2\\""')]
     language = c
     include_dirs = ['/home/nwagner/src/ATLAS3.8.2/include']
 lapack_opt_info:
     libraries = ['lapack', 'ptf77blas', 'ptcblas', 'atlas']
     library_dirs = ['/home/nwagner/src/ATLAS3.8.2/mybuild/lib']
     define_macros = [('ATLAS_INFO', '"\\"3.8.2\\""')]
     language = f77
     include_dirs = ['/home/nwagner/src/ATLAS3.8.2/include']
 lapack_mkl_info:
   NOT AVAILABLE
 blas_mkl_info:
   NOT AVAILABLE
 mkl_info:
   NOT AVAILABLE
 None
 }}}

-- 
Ticket URL: <http://projects.scipy.org/scipy/ticket/1458#comment:5>
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